Silencer



FIG. 1 is a perspective view of a silencer showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a front view thereof; and,

FIGS. 4-7 are a side views thereof.

The broken lines in the figures are for the purpose of illustrating environmental structure only and form no part of the claimed design. 

CLAIM The ornamental design for a silencer, as shown and described. 